Langmuir,
Год журнала:
2023,
Номер
39(43), С. 15391 - 15400
Опубликована: Окт. 19, 2023
Onion-like
carbon
(OLC)
is
a
kind
of
material
with
graphene-like
structure
and
large
interlayer
spacing,
favorable
to
good
lubricating
performance.
Herein,
facile
method
presented
for
the
preparation
functionalized
OLC
nanoparticles
from
candle
soot
surface
modification.
The
are
collected
combustion
burning
via
simple
heat
treatment,
then
zwitterionic
polymer
(polyethylenimine-quaternized
derivative,
PEIS)
can
self-assemble
onto
epigallocatechin
gallate
Michael
addition
Schiff-base
reaction,
thus
obtaining
PEIS-functionalized
(PEIS@OLC).
grafting
PEIS
endows
hydrophilic
performance,
so
as-obtained
PEIS@OLC
exhibits
outstanding
dispersion
property
as
water-based
lubricant
additive.
Compared
pure
water,
average
coefficient
friction
decreases
0.110
0.512,
corresponding
wear
volume
reduced
by
61.02%
1.5
wt
%
addition.
improved
mainly
due
synergetic
effect
protective
film
induced
tribochemical
reaction
hydration
PEIS.
Besides,
could
also
display
nanoscale
rolling
repairing
effects
at
contact
interface,
resulting
in
reduction
wear.
Abstract
Solar
energy
is
a
primary
form
of
renewable
energy,
and
photothermal
conversion
direct
process
with
tunable
efficiency.
Among
various
kinds
materials,
porous
organic
polymers
(POP)
are
widely
investigated
owing
to
their
controllable
molecular
design,
tailored
structures,
good
absorption
solar
light,
low
thermal
conductivity.
A
variety
POP,
such
as
conjugated
microporous
(CMP),
covalent
frameworks
(COF),
hyper‐crosslinked
(HCP),
intrinsic
microporosity
(PIM),
ionic
(PIP),
developed
applied
in
applications
seawater
desalination,
latent
storage,
biomedical
fields.
In
this
review,
comprehensive
overview
the
recent
advances
POP
for
provided.
The
micro
structure
characteristics
macro
morphology
designed
heat
phototherapy
photodynamic
therapy,
drug
delivery.
Besides,
probe
into
underlying
mechanism
structural
design
constructing
excellent
performance
methodicalized.
Finally,
remaining
challenges
prospective
opportunities
future
development
energy‐driven
elucidated.
Conductive
hydrogels
have
attracted
widespread
attention
in
the
fields
of
biomedicine
and
health
monitoring.
However,
their
practical
application
is
severely
hindered
by
lengthy
energy-intensive
polymerization
process
weak
mechanical
properties.
Here,
a
rapid
method
polyacrylic
acid/gelatin
double-network
organohydrogel
designed
integrating
tannic
acid
(TA)
Ag
nanoparticles
on
conductive
MXene
nanosheets
as
catalyst
binary
solvent
water
glycerol,
requiring
no
external
energy
input.
The
synergistic
effect
TA
NPs
maintains
dynamic
redox
activity
phenol
quinone
within
system,
enhancing
efficiency
ammonium
persulfate
to
generate
radicals,
leading
10
min.
Also,
ternary
composite
MXene@TA-Ag
can
act
agents,
enhanced
fillers,
adhesion
promoters,
antibacterial
agents
organohydrogels,
granting
them
excellent
multi-functionality.
organohydrogels
exhibit
stretchability
(1740%)
high
tensile
strength
(184
kPa).
strain
sensors
based
ultrahigh
sensitivity
(GF
=
3.86),
low
detection
limit
(0.1%),
stability
(>1000
cycles,
>7
days).
These
monitor
human
limb
movements,
respiratory
vocal
cord
vibration,
well
various
levels
arteries.
Therefore,
this
holds
potential
for
applications
such
monitoring
speech
recognition.
